<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    #gy{color: green}
    .c1{color: yellow}
    input[type='text'],body>p{background-color: red}
    body>div>div>p{color: pink}
     div div p{background-color: yellow}
     a:link{color: green}
     a:visited{color: red}
     a:hover{color: yellow}
     a:active{color: pink}
  </style>
</head>
<body>
<ul>
  <li>刘备</li><li id="gy">关羽</li><li class="c1">张飞</li>
</ul>
<p>香蕉</p><p class="c1">苹果</p>
<input type="text">
<input type="password">
<div>
  <p>p1</p>
  <div><p>p2</p></div>
  <div><div><p>p3</p></div></div>
</div>
<a href="http://www.tedu.cn">达内官网</a>
</body>
</html>